High-Temperature Oxidation Studies of Plasma-Sprayed NiCrAlY/TiO2 and NiCrAlY/Cr2O3/YSZ Cermet Composite Coatings on MDN-420 Special Steel Alloy
نویسندگان
چکیده
The plasma spray process was used to form 70%NiCrAlY + 30%TiO2 and 25%Cr2O3 5%YSZ cermet coatings on MDN-420 special steel alloy . Cyclic oxidation testing conducted coated uncoated specimens at 700°C under a static air environment. Thermogravimetric analysis applied establish the kinetics. X-ray diffraction (XRD), scanning electron microscopy (SEM)/energy-dispersive x-ray spectroscopy (EDS), probe microanalysis (EPMA) techniques were analyze oxidized products. NiCrAlY Cr2O3 YSZ coating found be most resistive when compared with TiO2 in aggressive Net weight loss observed for bare due sputtering. resistance of formation Cr2O3, NiCr2O4, NiO, Al2O3 phases.
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ژورنال
عنوان ژورنال: Metallography, Microstructure, and Analysis
سال: 2021
ISSN: ['2192-9270', '2192-9262']
DOI: https://doi.org/10.1007/s13632-021-00784-0